Who do you think is wrong or should give in?

Ok me^ and my fianc� are having a problem. Now what the problem is about is whether or not I should have a facebook. Now I've had one but I decided to delete it because I made a mistake which was harmless for my fianc� to make him feel better. The thing is I want it back, but previously we had discussed how we are going to forget the past problems and mistakes and start new with eachother and one of the new agreements for us to work out n be successful is to have fairness. So my argument is he has one I should too and we are suppose to forget past just as I had to. His side is keeping my word n that I hurt him so I shouldn't keep it.... So what are some opinions??